Scientists who study ________ noise say that ...

Scientists who study ________ noise say that ________ average noise level in New York is 72.5 decibels.

A．/；the　 B．/；an　 C．the；an　 D．a；the

高三英语单项填空中等难度题查看答案及解析

Some scientists say that animals in the oceans are increasingly threatened by noise pollution caused by human beings.

The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.

Decibels (分贝) measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety－five would have the same effect.

Some scientists have suggested setting a noise limit of one hundred and twenty decibels in the oceans. They have observed that noises at that level can frighten and confuse whales(鲸鱼).

A team of American and Canadian scientists discovered that louder noises can seriously injure some animals.

The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales' ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected.

Many researchers whose work depends on ocean sounds are against a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.

Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists don't think that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.

1.According to the passage, natural sounds include all of the following EXCEPT________.

A．sounds made by animals themselves

B．ocean drilling

C．underwater earthquakes

D．the breaking of ice fields

2.Which of the following is true of whales？

A．They won't be confused by noises.

B．They are deaf to noises.

C．Their ability to reproduce will be lowered by high­level noises.

D．Their hearing will be damaged by high­level noises.

3.According to the passage, what will scientists most probably do in the future?

A．They will work hard to reduce ocean noise pollution.

B．They will protect sea animals from harmful noises.

C．They will try to set a limit of 120 decibels.

D．They will study the effect of ocean noise pollution.

高三英语阅读理解中等难度题查看答案及解析

Some scientists say that animals in the oceans are increasingly threatened by noise pollution caused by human beings.

The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.

Decibels (分贝) measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety－five would have the same effect.

Some scientists have suggested setting a noise limit of one hundred and twenty decibels in the oceans. They have observed that noises at that level can frighten and confuse whales（鲸鱼）.

A team of American and Canadian scientists discovered that louder noises can seriously injure some animals.

The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales' ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected(被感染的).

Many researchers whose work depends on ocean sounds are against a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.

Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists don’t think that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.

1.According to the passage, which of the following is increasingly dangerous to sea creatures?

A. The sound of cars.　　　　　　　 B. The sound of voices.

C. Man-made noise pollution.　　 D. The sound of steps.

2.According to the passage, natural sounds include all of the following EXCEPT________.

A. sounds made by animals themselves 　 B. ocean drilling

C. underwater earthquakes　　 　　　　　　 D. the breaking of ice fields

3.Which of the following is discussed in the third paragraph?

A. The same noise level produces a different effect on land and in the ocean.

B. Different places may have different types of noises.

C. The decibel is not a right unit (单位) for measuring underwater noise.

D. Different ocean animals may have different reactions to noises.

4.Which of the following is true of whales?　　

A. They won't be confused by noises.

B. They are deaf to noises.

C. Their ability to reproduce will be lowered by high-level noises.

D. Their hearing will be damaged by high-level noises.

5.According to the passage, what will scientists most probably do in the future?

A. They will work hard to reduce ocean noise pollution.

B. They will protect animals from harmful noises.

C. They will try to set a limit of 120 decibels.

D. They will study the effect of ocean noise pollution.

高三英语阅读理解中等难度题查看答案及解析

Some scientists say that animals in the oceans are increasingly threatened by noise pollution caused by human beings.

The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.

Decibels（分贝）measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety-five would have the same effect.

Some scientists have proposed setting a noise limit of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales.

A team of American and Canadian scientists discovered that louder noises can seriously injure some animals. The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales' ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected.

Many researchers whose work depends on ocean sounds object to a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.

Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists suspect that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.

1. According to the passage, which of the following is increasingly dangerous to sea creatures?

A. The man-made noises.                B. The noises made by themselves.

C. The sound of earthquakes.             D. The sound of the ice-breaking.

2. Which of the following is discussed in the third paragraph?

A. Different places with different types of noises.

B. The very human ears sensitive to all types of noises.

C. The ocean animals' reaction to noises.

D. The same noise measured differently on land and in the ocean.

3.We can know from the passage that many researchers think that the noise limit of one hundred twenty decibels would _____.

A. prevent them from doing their research work

B. benefit them a lot in their research work

C. do good to their health

D. increase the industrial output

4. According to the passage, what will scientists most probably do in the future?

A. They will try their best to decrease noise.

B. They will work hard to cut down noise pollution.

C. They will study the effect of different noises.

D. They will protect animals from harmful noises.

高三英语阅读理解中等难度题查看答案及解析

Some scientists say that animals in the oceans are increasingly threatened by noise pollution caused by human beings.

The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.

Decibels (分贝) measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety－five would have the same effect.

Some scientists have suggested setting a noise limit of one hundred and twenty decibels in the oceans. They have observed that noises at that level can frighten and confuse whales（鲸鱼）.

A team of American and Canadian scientists discovered that louder noises can seriously injure some animals.

The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales' ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected(被感染的).

Many researchers whose work depends on ocean sounds are against a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.

Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists don’t think that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.

1.According to the passage, which of the following is increasingly dangerous to sea creatures?

A. The sound of cars.

B. The sound of voices.

C. Man-made noise pollution.

D. The sound of steps.

2.According to the passage, natural sounds include all of the following EXCEPT________.

A. sounds made by animals themselves                        B. ocean drilling

C. underwater earthquakes                                            D. the breaking of ice fields

3.Which of the following is discussed in the third paragraph?

A. The same noise level produces a different effect on land and in the ocean.

B. Different places may have different types of noises.

C. The decibel is not a right unit (单位) for measuring underwater noise.

D. Different ocean animals may have different reactions to noises.

4. Which of the following is true of whales?

A. They won't be confused by noises.

B. They are deaf to noises.

C. Their ability to reproduce will be lowered by high-level noises.

D. Their hearing will be damaged by high-level noises.

5.According to the passage, what will scientists most probably do in the future?

A. They will work hard to reduce ocean noise pollution.

B. They will protect animals from harmful noises.

C. They will try to set a limit of 120 decibels.

D. They will study the effect of ocean noise pollution.

高三英语阅读理解中等难度题查看答案及解析

Scientists who study the Sun watch for sunspots—violent storms that can affect communications，navigation systems and even electric power stations on the Earth.

Sunspots are a product of huge electromagnetic storms on the Sun. Scientists on the Earth are able to observe sunspots eight minutes after they happen. That is how long it takes for the Sun’s light to reach us.

The first electrically charged particles (颗粒）from a sunspot enter the Earth’s atmosphere about 20 to 30 minutes after the storm happens. These particles can harm human beings. So before they arrive, astronauts on the International Space Station move into special areas designed to protect them from their effects.

About a day or two later, the biggest part of the storm arrives. It is called a coronal mass ejection. “That is billions of tons of solar material that's blown away from the Sun. It’s traveling millions of kilometers an hour, but that is relatively slow.” says Alex Young, the Associate Director for Science at NASA's Heliophysics Science Division.

Several civilian government agencies and the U.S. Air Force watch weather conditions in space 24 hours a day. NASA does so because it must protect its astronauts and the electronic devices on its spacecraft.

Scientists are also trying to understand why the number of sunspots rises and falls at almost regular intervals every 11 years. In other words, scientists can almost predict the amount of solar activity. Sometimes the intensity (强度）is higher，sometimes lower，For example, the current solar cycle, as it is called, is much lower than the previous one.

Several satellites watch the Sun and the environment between the Sun and tho Earth. Pictures and other information from the satellites tell scientists what is happening on and near the Sun.

Alex Young says we have only been looking at the Sun with powerful instruments for about 30 to 40 years. Thai is a very short time compared to ll\o four billion years that tho star has been shining.

1.Why do astronauts on International Space Station move into special area?

A.To avoid being harmed. B.To charge the battery.

C.To watch the Sun closely D.To protect devices on the spacecraft.

2.How long does a solar cycle last?

A.About 8 minutes. B.About 20 to 30 minutes

C.About 11 years. D.About 30 to 40 minutes

3.What enables scientists to watch the Sun?

A.Environmental changes. B.Good weather conditions

C.Advanced instruments. D.Government agencies

4.What does the passage mainly talk about?

A.The role of satellites. B.findings about sunpots

C.Observation of space. D.Communication on the earth.

高三英语阅读理解简单题查看答案及解析

How long can human beings live? Most scientists who study old age think that the human body is ___ to live no longer than 120 years. However, 110 years is probably the longest that anyone could hope to live — if he or she is ___ healthy and lucky. Some scientists even say we can live as long as 130 years! Yet, our cells simply cannot continue to reproduce ___. They wear out, and as a result, we get old and ___ die.

Even though we can’t live forever, we are living a ___ life than ever before. In 1900, the average American life span(寿命)was only 47 years, but today it is 75 years!

When does old age begin then? Sixty-five may be out-of-date as the ___ line between middle age and old age. After all, many older people don’t begin to experience physical and mental ___ until after age 75.

People are living longer because more people ___ childhood. Before modern medicine changed the laws of nature, many children died of common childhood ___. Now that the chances of dying ____ are much lower, the chances of living long are much higher due to better diets and health care.

On the whole, our population is getting older. The ____ in our population will have lasting effects on our social development and our way of life. Some people fear such changes will be for the worse, while some see ____, not disaster. Today, many men and women in their "golden years" are healthy, still active, and young in ____ if not in age.

As our society grows old, we need the ____ of our older citizens. With long lives ahead of them, they need to ____ active and be devoted.

1.A. designed B. selected C. improved D. discovered

2.A. completely B. generally C. apparently D. extremely

3.A. rapidly B. harmlessly C. endlessly D. separately

4.A. eventually B. hopelessly C. automatically D. desperately

5.A. busier B. longer C. richer D. happier

6.A. finishing B. guiding C. waiting D. dividing

7.A. stress B. damage C. decline D. failure

8.A. survive B. enjoy C. remember D. value

9.A. problems B. fears C. worries D. diseases

10.A. poor B. young C. sick D. quiet

11.A. changes B. recovery C. safety D. increases

12.A. dreams B. chances C. strengths D. choices

13.A. mind B. appearance C. voice D. movement

14.A. protection B. suggestions C. contributions D. permission

15.A. sound B. appear C. turn D. stay

高三英语完形填空中等难度题查看答案及解析

How long can human beings live? Most scientists who study old age think that the human body is ______ to live no longer than 120 years. However, 110 years is probably the longest that anyone could hope to live —— if he or she is ______ healthy and lucky. Some scientists even say we can live as long as 130 years! Yet, our cells simply cannot continue to reproduce ______. They wear out, and as a result, we get old and ______ die.

Even though we can’t live forever, we are living a ______ life than ever before. In 1900, the average American life span (寿命) was only 47 years, but today it is 75 years!

When does old age begin then? Sixty-five may be out-of-date as the ______ line between middle age and old age. After all, many older people don’t begin to experience physical and mental ______ until after age 75.

People are living longer because more people ______ childhood. Before modern medicine changed the laws of nature, many children died of common childhood ______. Now that the chances of dying ______ are much lower, the chances of living long are much higher due to better diets and health care.

On the whole, our population is getting older. The ______ in our population will have lasting effects on our social development and our way of life. Some people fear such changes will be for the worse, while some see ______, not disaster, many men and women in their “golden years” are healthy, still active, and young in ______ if not in age.

As the society grows old, we need the ______ of our older citizens. With long lives ahead of them, they need to ______ active and devoted.

1.A. designed B. selected C. improved　 D. discovered

2.A. completelyB. generallyC. apparently　 D. extremely

3.A. rapidlyB. harmlessly C. endlessly　 D. separately

4.A. eventually B. hopelessly C. automatically　 D. desperately

5.A. busier B. longer　 C. richer　 D. happier

6.A. finishingB. guiding　 C. waiting　 D. dividing

7.A. stressB. damage　 C. decline　 D. failure

8.A. survive B. enjoy　 C. remember　 D. value

9.A. problems B. fears　 C. worries　 D. diseases

10.A. poorB. young　 C. sick　 D. quiet

11.A. changes B. recovery C. safety　 D. increases

12.A. dreams B. chances　 C. strengths　 D. choices

13.A. mind B. appearance C. voice　 D. movement

14.A. protection B. suggestions C. contributions　 D. permission

15.A. sound B. appear　 C. turn　 D. stay

高三英语完形填空中等难度题查看答案及解析

Housework not good exercise, says study

1.　　 It even said that people who did the most housework were usually the most overweight. 　 2.　　 The contribution of domestic physical activity to meeting current recommendations for health. It questions whether activities like do-it-yourself, gardening and housework are good exercise. 　 3.　　　 but there is a danger that people incorrectly think housework is proper exercise.

A total of 4,563 adults took a survey about their weekly physical activity. 4.　 Researcher Professor Murphy said any physical activity should increase the amount of calories burnt. 　 5.　　 She said housework was “inversely related to leanness”. She said this suggested that either people overestimate how hard housework was an exercise, or they eat too much because they think they have lost lots of calories doing household chores.

However, her study found the opposite.

People who do housework usually eat more.

A new study says housework is not the quality exercise many people think it is.

The research showed that people who included housework as exercise tended to be heavier.

The study is called Does “doing housework keep you healthy” ?

They think doing exercise is of great benefit to healthy.

It says any activity is better than none.

高三英语信息匹配中等难度题查看答案及解析

Want to live longer? Win an Oscar.

A new study says that actors who received the award earn more than larger paychecks.

So when 94-year-old Katharine Hepburn once remarked that she was respected internationally “like an old building”, she had no idea that her four Oscars directly influenced her longevity(长寿).

The study says winning actors will live 3.9 years longer than their losing counterparts (对手). Actors who have won more than once, like Hepburn, live up to six years longer than those who were nominated (提名) but never won.

“We found that they died from the same things we all die from—cancer, heart disease, but they fought them a bit longer and diseases came a bit later,” says Dr. Donald Redelmeier, the leading author of the study. Redelmeier says the sense of success and satisfaction makes one’s soul become more full of life.

“We are not saying that you will live longer if you win an Oscar,” explains Redelmeier, “or that people should go out and take acting courses. Our main conclusion is simply that social factors are important.” The study’s implied conclusion, he says, is that doctors should ask about their patients’ personal feelings because mental well-being is related to physical health.

Redelmeier says he got the idea for the study when he watched a glowing Gwyneth Paltrow win an Oscar in 1999 for her role in Shakespeare in Love. Redelmeier says, “She looked more full of life than anyone I had seen.”

“We found, too, those that had multi-nominations and no win had the same life expectancy as those with just a single nomination and no win,” Redelmeier adds.

1.The longevity of Oscar winners mainly has something to do with___________.

A. the big money that was awarded

B. mental factors

C. rich and colorful lives

D. respect from others and better treatment

2.Tom had five Oscar nominations but win no Oscar and Peter had only one nomination and won no Oscar either. We can tell__________.

A. Tom probably will have a longer life than Peter.

B. Peter probably will have a longer life than Tom

C. Both Tom and Peter probably will have the same life expectancy

D. Both Tom and Peter probably will have a long life.

3.According to the passage, we know __________.

A. When Katharine Hepburn was 94, she knew her long life had something to do with her 4 Oscar prizes

B. In general the number of Oscar prizes has nothing to do with a person’s life expectancy.

C. That Gwyneth Paltrow’s full of life made Redelmeier decide to do the study.

D. If you want to live a happy and long life, you should take acting courses and win Oscars.

4.What would be the best title for the passage?

A. Most Oscar Winners Live Longer Lives

B. How to Get a Long Life

C. A New Study about Long Lives

D. An Amazing Finding

高三英语阅读理解中等难度题查看答案及解析